Granted Patent
Utility
US 5,657,833 · App. 08/567,423
Self-contained unitized lubricant delivery apparatus
Inventor:
Lewis G. Freeman
Patented Case
View Patent ↗
Granted: Aug 19, 1997
Filed: Dec 5, 1995
Inventor
Lewis G. Freeman
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.